CN201918174U - Efficient wave-absorbing particle - Google Patents
Efficient wave-absorbing particle Download PDFInfo
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- CN201918174U CN201918174U CN2010206674912U CN201020667491U CN201918174U CN 201918174 U CN201918174 U CN 201918174U CN 2010206674912 U CN2010206674912 U CN 2010206674912U CN 201020667491 U CN201020667491 U CN 201020667491U CN 201918174 U CN201918174 U CN 201918174U
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Abstract
The utility model discloses an efficient wave-absorbing particle, which is a hollow particle and the surface of the particle is provided with honeycomb holes. Compared with the prior art, the efficient wave-absorbing particle has the following advantages that: when the wave-absorbing particles are gathered together, electromagnetic waves are mutually and continuously reflected between the metallic surfaces of the wave-absorbing particles, and the electromagnetic energy of the electromagnetic waves is converted into heat energy. The metal component, the sphere size and the surface nanometer honeycomb size of the wave-absorbing particle can be adjusted, so the model number of the wave-absorbing particle suitable for absorbing the electromagnetic waves in a certain frequency range can be found out, and the wave-absorbing material for absorbing the electromagnetic waves in wide band can be manufactured by evenly mixing the wave-absorbing particles with a plurality of model numbers and epoxy resin together.
Description
Technical field
The utility model relates to a kind of electromagnetic efficient suction wave-particle that is used to absorb.
Background technology
Absorbing material is having ferrite, magnetic Nano capsule, polyaniline to coat carbon black, conducting polymer, silicon carbide powder nanometer, graphite-carbon fiber etc. aspect the selection of wave absorbing agent, people have carried out many work aspect the research of absorbing material, as with the glass microballoon being basic examining at superficial deposit nano metal (copper, nickel) particulate and TiO
2Particulate makes compound substance etc.In a word, how to improve absorbing material absorption efficiency, widen the absorption of electromagnetic wave frequency and make material light specific gravity and to tolerate various environmental tests are targets that people constantly ask most as much as possible.
The utility model content
The utility model provide a kind of can the electromagnetic efficient suction wave-particle of efficient absorption, the utlity model has absorption of electromagnetic wave efficient height and have light specific gravity, high temperature resistant, characteristics that absorption frequency is wide.
The utility model adopts following technical scheme:
A kind of efficient suction wave-particle described in the utility model, described suction wave-particle is the metal hollow particulate, and there is cellular hole on the surface of particulate.
Compared with prior art, the utlity model has following advantage:
1, absorption efficiency height
Consider from electromagnetic frequency and wavelength, be radiated that the electromagnetic wave of inhaling the wave-particle surface can reflect, diffraction etc.The micromechanism characteristics of suction wave-particle of the present invention determine its specific surface area to increase considerably, electromagnetic wave continues irregular reflection between each particle metal surface chance also will increase considerably, inhale wave-particle and continue random scatters and will make the energy consumption that electromagnetic wave carries and efficiently be changed into heat energy, show as the rising of inhaling the wave-particle temperature.
2, light specific gravity
Because metal ball body inside be hollow-core construction, the bulk specific weight of suction wave-particle and contain the coating of inhaling wave-particle all the proportion than present ferrite suction wave-particle and the coating made is little more than 30%.
3, high temperature resistant
Take ferrite and organic polymer to do to inhale wave-particle may lose efficacy 200 or more, and suction wave-particle of the present utility model as long as being controlled at the suction wave-particle, temperature just can keep the absorption of electromagnetic wave ability below making the fusing point of metal Celsius.
4, wide to the absorption of electromagnetic wave frequency
Because inhaling metal ingredient, sphere size and the nano surface honeycomb size of wave-particle can adjust, can find out and to be fit to absorb a certain frequency range electromagnetic suction wave-particle model (metal ingredient, sphere size, surperficial honeycomb size), the suction wave-particle of a plurality of models is evenly mixed with epoxy resin etc., just can be made into and to absorb the electromagnetic absorbing material of broadband.
Description of drawings
Fig. 1 is a structural representation of inhaling wave-particle.
Fig. 2 contains the coating of the inhaling wave-particle synoptic diagram to electro-magnetic wave absorption.
Embodiment
Embodiment
A kind of efficient suction wave-particle, described suction wave-particle is a hollow particle 1, and there is cellular hole 2 on the surface of ball.With reference to Fig. 1, what Fig. 1 showed is the housing of interior sky, and surface of shell has been covered with hole, these holes can be connect, can not connect yet, this structure has increased considerably the specific surface area of powder.When electromagnetic wave A is radiated the absorbing particle that flocks together, unless escaping from, electromagnetic wave inhales the wave-particle compact community, otherwise will between the suction wave-particle surface of assembling, be continued reflection until the thorough approach exhaustion of energy, its electromagnetic energy is converted into heat energy and is inhaled the wave-particle absorption, shows as the rising of inhaling the wave-particle temperature.
In the present embodiment, described suction wave-particle is gold, silver, platinum, palladium, nickel, tungsten, molybdenum, lead, copper, tin, cobalt, cadmium or its alloy hollow particle; The diameter of hollow particle is 5 nanometers to 150 micron, and the shell thickness of hollow particle is 1/10-1/3 of a mean particle dia, and the aperture of cellular hole is the 0.1-10 nanometer.
Experimental example
With reference to Fig. 2 and Fig. 1, when electromagnetic wave A is radiated the suction wave-particle that flocks together, unless escaping from, electromagnetic wave inhales the wave-particle compact community, otherwise will between the suction wave-particle surface of assembling, be continued reflection until the thorough approach exhaustion of energy, its electromagnetic energy is converted into heat energy and is inhaled the wave-particle absorption, shows as the rising of inhaling the wave-particle temperature.Electromagnetic wave A is when matrix 4 radiation, at first have the reflection wave C of part on coating 3 surfaces, the electromagnetic wave that enters coating 3 inside will run into a large amount of suction wave-particles, form electromagnetic wave B, lasting reflection will take place in electromagnetic wave B between each surface of these particles, until totally with electromagnetic energy consumption, the surface that the part electromagnetic wave B that does not run into the part of the electromagnetic wave A that inhales wave-particle and be not consumed arrives matrix 4 forms reflection wave, these reflection waves enter coating 3 inside again, the reflection that takes place to continue between suction wave-particle surface is until energy consumption again, as long as electromagnetic wave does not thoroughly leave coating surface, just very likely inhaled lasting reflection between the wave-particle surface at the coating internal motion, until depleted of energy, the small part electromagnetic wave is escaped from coating 3 and is formed electromagnetic wave D.The electromagnetic energy that is consumed is inhaled the wave-particle absorption and is converted to the rising that heat energy shows as suction wave-particle temperature.
Based on the principle of work of above-mentioned suction wave-particle, the present invention proposes next quick comparative evaluation suction wave-particle of microwave irradiation temperature measurement relative method or absorbing material simultaneously.Ceramic sweet pot with identical shaped and volume is respectively adorned the material that same deal need compare, and carries out temperature survey with infrared thermometer earlier, then sweet pot is put into micro-wave oven, puts into the beaker that 100-1000ml water is housed simultaneously.Open micro-wave oven, and writing time, when micro-wave oven quits work, open micro-wave oven immediately and take out sweet pot, measure the temperature of powder in the sweet pot rapidly with infrared thermometer, and record.The powder temperature lift-off value is big more, illustrates that then this absorbing agent is high more to the microwave absorbing efficient of this microwave transmission frequency.The device of changing launched microwave in the micro-wave oven heavily is covered with and states measuring process to adjust the microwave transmission frequency, just can compare the absorption efficiency height of absorbing material under new microwave frequency.
Said method, avoided the trouble of test absorbant conductivity, magnetic permeability, reflectivity, can compare the height of absorbing agent fast, thereby reached the purpose that rapid screening is estimated microwave absorbing efficient, for the production run of absorbing agent in enormous quantities, then can be used for the quick monitoring of product quality.
In the benzene experimental example, get four sweet pots, adorn the 2 microns carbonyl iron dusts in 5 gram particles footpaths, the prepared absorbing agent 4# of 5 gram implementation columns 1 respectively, the iron powder of 5 gram particles footpath, 50 nanometers, the prepared absorbing agent 1-2 of 5 gram implementation columns 2, four sweet pots that sample is housed are put into micro-wave oven, put into the beaker that the 100---500 ml water is housed simultaneously.Open the micro-wave oven irradiation respectively, writing time, treat to take out sample immediately after micro-wave oven quits work and use infrared thermometer to measure powder temperature.Repeatedly heavily be covered with the process of stating, the record of measurement is as follows:
Table 1
By his-and-hers watches 1 more as can be known: the temperature rise amplitude of each powder body material after to the microwave absorbing of household microwave oven arranged from getting well to differing from and is successively: 1-2 absorbing agent, 4# absorbing agent, 50 nanometer iron powders, 2 microns carbonyl iron dusts of particle diameter, therefore, can judge and from getting well be successively: 1-2 absorbing particle, 4# absorbing particle, 50 nanometer iron powders, 2 microns iron powders of particle diameter to the arrangement that differs to electro-magnetic wave absorption.
Claims (3)
1. the efficient wave-particle of inhaling is characterized in that described suction wave-particle is hollow particle (1), and there is cellular hole (2) on the surface of particulate.
2. efficient suction wave-particle according to claim 1 is characterized in that, described suction wave-particle is gold, silver, platinum, palladium, nickel, tungsten, molybdenum, lead, copper, tin, cobalt, cadmium or its alloy hollow particle.
3. according to claim 1 or 2 described efficient suction wave-particles, the diameter that it is characterized in that hollow particle is 5 nanometers to 150 micron, and the shell thickness of hollow particle is 1/10-1/3 of a mean particle dia, and the aperture of cellular hole is the 0.1-10 nanometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206674912U CN201918174U (en) | 2010-12-20 | 2010-12-20 | Efficient wave-absorbing particle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206674912U CN201918174U (en) | 2010-12-20 | 2010-12-20 | Efficient wave-absorbing particle |
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| CN201918174U true CN201918174U (en) | 2011-08-03 |
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| CN2010206674912U Expired - Fee Related CN201918174U (en) | 2010-12-20 | 2010-12-20 | Efficient wave-absorbing particle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109228000A (en) * | 2018-09-07 | 2019-01-18 | 南京波平电子科技有限公司 | Dedicated absorbing material of vehicle radar antenna and preparation method thereof |
| CN110177769A (en) * | 2017-01-14 | 2019-08-27 | 赫卡石墨技术有限责任公司 | For shielding the building material mixture of electromagnetic radiation |
-
2010
- 2010-12-20 CN CN2010206674912U patent/CN201918174U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110177769A (en) * | 2017-01-14 | 2019-08-27 | 赫卡石墨技术有限责任公司 | For shielding the building material mixture of electromagnetic radiation |
| CN110177769B (en) * | 2017-01-14 | 2021-12-28 | 赫卡石墨技术有限责任公司 | Building material mixture for shielding electromagnetic radiation |
| CN109228000A (en) * | 2018-09-07 | 2019-01-18 | 南京波平电子科技有限公司 | Dedicated absorbing material of vehicle radar antenna and preparation method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20191220 |